This was my first try at growing comfrey from seed, and I can understand the frustration that many grower's have with this method of reproduction. But if you follow the directions, these will germinate and produce plants. Unusually, the seed is sown and THEN it's put it the fridge for a few weeks - I equate that as 3 weeks. The container is covered, and then left (still covered) to warm on a low heating pad. The actual arrival of the seeds is not quick even then - it took another 3 weeks + for seedlings to finally emerge. I practiced with only one seed per cell in a pony pack and for my 2nd try I am using 2 seeds per. These are fairly pricey seeds for me, and I didn't want to attempt them all at once until I was more secure that I could get some to sprout. I've got my 2nd batch in the fridge and the first pack is outdoors, hardening off. Remember to keep the pre-emergent seeds watered - I lost 3 due to drying out, while the other 3 were watered again and finally showed up above the soil. I think this is a cost-effective way to add more comfrey to the garden - just be patient and follow the instructions. I will probably be ordering another pack next year and germinate even more of these.